GPS Signal Strength Requirements | Symmetricom XLi IEEE 1588

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VSWR, and input impedance also affect system performance. Symmetricom recommends using the standard 12-volt capable antenna and cable provided with the GPS receiver.

Figure 4: GPS Signal Strength Requirements

Connect the GPS antenna cable to the GPS receiver’s ANTENNA connector at the rear of the XLi.

Note: Use a 12-volt capable GPS antenna.

Making Additional Connections and Powering Up

Make the following connections to the XLi (all cables supplied):

1.For access to the web and command line interfaces, connect NET network port (on the Main CPU Card, 87-8000) to the LAN using the Cat 5 network cable (supplied).

For local access to the command line interface only, connect the SERIAL I/O port (on the Main CPU Card, 87-8000) to the to the PC’s serial port using a null modem cable.

2.Connect the 1588 network port to the timing network.

3.Connect the AC Power Supply it to a power source. The green STATUS light on the power supply indicates that the XLi is receiving power.

Upon receiving power, the XLi goes through its startup sequence; displaying “BOOTING”, “LOAD- ING”, and “STARTING”. After approximately 40 seconds, the XLi displays the clock status, and user interfaces (front panel/command line) become available. The IEEE 1588 card requires an additional 2 minutes to complete its startup sequence before it is available from the user interfaces.

Warning: Ensure that a disconnect device, such as a switch, with the appropriate voltage/ current rating is provided when operating/installing the XLi.

18	XLi IEEE 1588 Clock

997-01510-03, Rev. C, 12/12/2006

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Symmetricom XLi IEEE 1588 manual Making Additional Connections and Powering Up, GPS Signal Strength Requirements

Contents

XLi Ieee 1588 Clock Page Table of Contents User Interfaces SSS Ssssssssssssssssss Sssssssssssssssssss XLi-Generated Messages Snmp Viii Description Standard ConfigurationOverview Ieee 1588 Subsystem Related SpecificationsIeee 1588 card Physical Behavior Network PortPPS Output Sync OUT User Interface Introduction GPS C/A ReceiverLEDs Related topics SpecificationsStandard Tcvcxo Oscillator Standard 110 VAC Power Supply Clock Architecture DAC Interface Architecture Block Diagram AC Power Supply Mechanical/Environmental GPS Receiver System Time & Frequency AccuracyChassis Aux Ref Input NET Network Port Standard Inputs and OutputsSerial I/O Port J1 Input Time Interval Event Time J2 Output Rate Out Code Time Code Output J3 Input Auxiliary ReferencePPS Pulse Per Second Output Auxiliary Reference Aux Ref Alarm Output Certifications Installing the GPS Antenna Selecting a GPS Antenna Site Verifying the Site Mounting the GPS Antenna GPS Signal Strength Requirements L1 GPS Antenna methods for cabling and mounting Making Additional Connections and Powering Up GPS Signal Strength Requirements Configuring Network Settings Configuring the XLi Configuring the Ieee 1588 Cards PTP Master PTP Slave Slave Sync Threshold 5 microsec Rack Mounting the XLi Secure the brackets to the rack using rack mount screws 997-01510-03, Rev. C, 12/12/2006 Time Display Alarm Status LEDKeypad/Display Interface Where Status DisplayMenu Display Locked ∗ GPS PRI UTC Keypad Operation Time Zone Offset Other ways to abandon new settings in a function To open a function using MenuTo change the settings in a function, and not save them Keypad Examples Guest Login Command Line InterfaceOperator Login Logging You can log out using any of the following commands Changing Username and PasswordSession Timeout and Priority Logging Out Network port session Web InterfaceUser Privileges Navigating User Names and PasswordsSessions Submitting Changes 997-01510-03, Rev. C, 12/12/2006 Function Reference Function Summary Snmp F100 K I L L Reboot F1SSIGNHHMMCRLF F1 Time Zone OffsetFor example, to set the time zone offset, enter Sign To verify the change, enter F2 12/24 Hour FormatXLi responds Separately from To set the hour format, send F3 Time & DateFor example, to display the current hour format, send F2SDHHSEPIHHCRLF F3CR Time Mode =To display the time and date, send SEP For example, to display the date and time, send F4 Serial Port ConfigurationTo display the Serial Port settings, send To set the time and date, send To set the serial port settings, send F5 Time-Quality SetupFor example, to display the serial port settings, send F4 232 9600 8 none 1CRLF F5SSTATESEPFLAGSEPFLAGSEPFLAGSEPFLAGCRLF XLi responds The XLi respondsF5CR To display the Keypad Lock status, send F5 Enable 2000 20000 200000 2000000CRF6 Keypad Lock F6CR F8 Continuous Time Once-per-Second To enable Keypad Lock, send the following stringTo disable Keypad Lock, send the following string For example, to display the Keypad Lock status, send Format of the F8 Output String F5 Time-Quality Setup F11 Time Output Format F69 Time ModeFactory setting for the output string format is as follows Sohdddhhmmssqcrlf XLi replies While Synchronizing to a Reference SourceAfter Loosing a Reference Source F8CR SOHDDDHHMMSS.mmmQCRLF F9 Time On RequestFor example, to prepare Time on Request, enter To exit F9 press Ctrl-C on your keyboard To display the default format for F11, enterF11 Time Output Format F11 responds F11, with DDD suppressed, responds When you check the results by entering F11, F11 respondsTo see the resulting change to F11, enter F11 D With the new formatting, F8 displays F13 Time ErrorFor example, to display the time error, enter F9 displays F18 Software Version Request F18CR F50 B1 Llacr For example F51 GPS Antenna Cable DelayXLi responds using the following format F50 B1 Xyzcr F51SBNCR F51SBNSEPSIGNDELAYnsCRLFDelay F51 B4CR F52SEPSIGNDELAYnsCRLF F52 Distribution Cable DelayTo display the current distribution cable delay, enter F51 B4 100NSCR F52 +000000nsCRLF F53 GPS Operation ModeTo set the distribution cable delay to 60 ns, enter F52 +000060nsCR To save changes, press Enter F53 responds using the following formatIf an GPS C/A Receiver is available, F53 displays For example, enter Example response Or Dynamic ModeF60 GPS Receiver Satellite List F53 responds F60 B1 Allcr TypeLevel F60 B1 Currentcr F60 B1 Trackedcr F66CR F66 Daylight Saving Time DST ModeFor example, to disable DST, enter F66 OffCR F66 Manual 02 1 1 04 02 0 1 WhereXLi responds to all changes with F66 Manual 0 CR F69 Time Mode Important interactions between F69 and the IEEE1588 card F69CR Related functionsXLi gives one of the following responses F69 Local Crlf F69 Standard Crlf To display the F71 settings, enter For example, to change the time mode to local time, enterOr, to change the time mode to UTC, enter F71 Oscillator Statistics EXP F72 Fault StatusTo display the status of the fault detectors, enter DAY F73 Alarm Control / Status F72CR DAC Alarms General Information F73SSSTATUSSOURCES123456789ABCDECRLF GPS PRI OK Alarm EnabledF73CR Source F73SMASKSEPM12346789ABCDECRLF To clear the Alarm Latches, enterF73SLATCHSEP123CRLF F73SMASKSEP123456789ABCDECR For example, to enter new mask settings, enterXLi replies To verify the changes, enter To enable LED Blink, enter To view the Time Threshold setting, enterTo view Timeout Delay, enter To disable LED Blink, enter F74 Clock Source Control XLi responds, using the following format F90 Code Output ConfigurationTo display the current settings, enter F74CR F90SCODE Outputtypecr To change the Code Output selection enterF90CR Code Output F100 Network Port Configuration & XLi Firmware Group Description F100 followed by Comments F100 Eacr F100 EA Ethernet AddressF100 IP IP Address F100SIPCR F100 Ipcr F100 SM Subnet MaskF100 IP 206.54.0.21CR F100 IP 192.169.46.150 SM255.255.255.0 G 192.168.46.1CR F100 G Gateway F100 G 206.54.0.17CR F100 IC Network Port SettingsF100 Baset 10/100 BASE- T F100 GCR F100 Baset 10TCRLF OK Crlf Reseting the Unitcrlf Please WAIT…CRLFF100 L/LOCK/UNLOCK Remote Lockout Or use the keypad/display’s F100 F100 L Remote LockoutTo users on the serial port, XLi responds GOODBYE.CRLF F100SSTCR F100 ST Self Test StatusF100 L Lockedcrlf F100 L Unlockedcrlf F100 BH 10.1.7.20 truetime/xli/192-8001.binCR F100 BUB Burn BootLoaderF100 BH Burn Host F100 Bubcr F100 BU BurnAnd, for example, displays the following text F100 Bucr F100SBFCR F100 BF Burn File SystemF100 Bufp Burn Fpga Firmware F100 bf Burning File 192-8002.fs with Size 524288 SEC F100 Config Configure NTP & Snmp Flash Successfully Programmed F100 config snmp get hostIP Address dirsubdirCR F100 J Factory Mode JumperHere’s an example of a successful Snmp config file transfer F100 config snmp set hostIP Address dirsubdirCR F100 J Factory MODE=1CRLF F100 J Factory MODE=0CRLF F100 K I L L RebootF100SJCR F100 Ksislslcr Scanforoptcard Begins F100 P Change User PasswordFlash File System Mounted Initialization Successfully Completed Unit responds example When you enter the new password, the XLi respondsF100 PI Ping F100 Pisip AddressCR Or it responds When you enter a new user name, The XLi respondsF100 PN Change User Name F100 Picr High High Stability Ocxo F108 Oscillator ConfigurationF108SOSCILLATORSCONFIGSOSCCRLF F108SCR For example, enter the following string F108 Oscillator Config TcvcxocrlfF110 J1 Input Tiet OSC = Function responds with the Ascii character string F110CR Tiet To obtain Tiet measurement from J1, enter Then configure Tiet exampleF111 J2 Output Rate F110 Tiet 50 Positivecrlf Displays a fixed 10 PPS rate output example To request the J2 Output Configuration, enter the followingXLi responds in the following format F111CR Auxiliary Reference Aux Ref Input F113 J3 Input Configuration Aux RefFor example, to produce a fixed 100 kPPS rate output, enter Where the F113 entry and request formats are defined as To display the J3 Input Configuration, enterXLi responds using the following formats XLi displays the current configuration example F116 Display Brightness Level Or, to disable F113, enterF113 Disablecrlf To all of the above examples, the XLi responds NTP F117 Factory ConfigurationF117CR Freq Meas = F118 Option Board Configuration F118SBNCRLF F118 B1CR F118SBNSOCCRLFOC = F118 B1 GPS M12 Receiver F119 GPS Receiver Configuration This information is useful for identifying the option card 233182129 Unlocked GPS PRI LocalLocked GPS PRI Local To obtain the status of the GPS Receiver, enter F119SBNSEPSCR F119SBNSCCR F119SBNSCSCONFIGCRF119 B1 S F119 B1 CCR For example to make it a primary reference source, enter F119 B1 C Pricrlf F126SKCCRLF F126 Options Key EntryF128 Have Quick Output F126S5674397586090CR F130 Precision Time Protocol Status PTP Technology Ethernet PTP NO. of Ports PTP Stratum F130SPBNSEPS PTP Part Number 118 XLi Ieee 1588 Clock F131 Precision Time Protocol Network Config Option bay location of the Ieee 1588 cards Dhcp enabled/disabled PTP Sync message interval Reset PTP settings to factory defaults PTP burst mode enabled/disabledPTP network port enabled/disabled PTP subdomain same PTP Slave Synchronization Threshold PTP Preferred Master ConfigurationPTP Master or Slave PRI/SEC/STBY Error Invalid Command F131 BN F131 B4 Enable/disable Dhcp Set the Default GatewayRequest the Dhcp settings Request the PTP Protocol settings Request a summary of the PTP card configuration Set Internet Configuration settings Set the IP Address Set the Subnet Mask To set the Default Gateway, enter Set the Default GatewayTo get the Default Gateway, enter To get the Dhcp setting, enter Setting the Internet ConfigurationEnable/Disable Dhcp Response To set the PTP protocol settings, use the following format Get PTP Protocol settingsTo get PTP protocol settings, use the following format F131 B4 Protocol 27 Enable Enablecrlf To request the PTP Subdomain Name, use the following format Request the PTP Subdomain NameSet the PTP Subdomain Name To set the PTP Subdomain Name, use the following format Reset the PTP Parameters to the Factory Default settings Initialize the PTP Protocol to User-entered Values F131 BN CCR Configuring the PTP Reference Clock SettingsTo change the settings, use the following format F131 B4 C F131 BN Sstcr Request the PTP Slave Synchronization ThresholdSet the PTP Slave Synchronization Threshold F131 B4 SST Request PTP Network Parameter Status Request the PTP Preferred Master Clock ConfigurationF131 B4 PM Enablecrlf F131 B4 PM F131 B4CRLF Preferred Master EnablecrlfF131 B4 S Slave Sync Threshold 5 microsecCRLF 136 XLi Ieee 1588 Clock Error Messages XLi-Generated Messages Error Action get or set is not specified Source file was successfully read Host configuration was successfulInformational Messages XLi has just terminated a session This page was intentionally left blank Overview of Steps Configuring Snmp ParametersSet up the FTP Server Get the IP Address of the FTP Server/Workstation F100 config snmp get hostIP Address dirsubdir Copy the Configuration Files to the FTP ServerEdit the Configuration Files Move the Configuration Files Back to the XLi F100 config snmp set hostIP Address dirsubdir 144 XLi Ieee 1588 Clock Overview of Procedure Open a Command Line Session on the XLi Upgrade the Firmware Enter the following command Then do the same for the ‘file system’ .fs file Do the same for the ‘firmware’ .bin fileThen enter F100 bh 192.168.49.120 /192-8002.fs TroubleshootingThen enter K space I space L space L as shown here F100 bf An example XLi response is Log on to the XLi and enter the following commandBootloader Nvram VER Proj REV F100 IC F100 IP192.168.47.156 SM255.255.255.0 G192.168.47.1 SymmetricomTtm-SMIv2.mib 152 XLi Ieee 1588 Clock Syntax Integer 0..2147483647 MAX-ACCESS read-only 154 XLi Ieee 1588 Clock XLi Ieee 1588 Clock 155 997-01510-03, Rev. C, 12/12/2006 TSP DCNNist DTS Syntax Integer 0..8 MAX-ACCESS read-only Status deprecated GpsLongitude OBJECT-TYPE Baud300 300, baud1200 1200, baud9600 Syntax Counter32 MAX-ACCESS read-only Status deprecated 160 XLi Ieee 1588 Clock Organization Symmetricom INC CONTACT-INFO XliMainCard-SMIv2.mibEND NoLeapWarning = ntp NtpEstErr OBJECT-TYPESyntax Integer Field, ntpSysStratum, to 1. = ntp Syntax Integer -127..127 MAX-ACCESS read-only Status current MODULE-IDENTITY Xli-SMIv2.mibXliSystem-SMIv2.mib SystemFaultHistory SystemAlarmDataSystemFaultConfig SystemFaultConfigData LatchClear 168 XLi Ieee 1588 Clock XLi Ieee 1588 Clock 169 997-01510-03, Rev. C, 12/12/2006 170 XLi Ieee 1588 Clock XLi Ieee 1588 Clock 171 997-01510-03, Rev. C, 12/12/2006 172 XLi Ieee 1588 Clock ClockIrigA Unlocked1 Locked MAX-ACCESS read-onlyLocked1 Unlocked2 = systemStatusGeneral Fault Gives the current status of the IRIG. = systemStatusDetail StatusSecondaryPower OBJECT-TYPE Syntax Integer Ok 1, fault 2 MAX-ACCESS read-only Status current Editing snmp.conf New Top Level Structure of Enterprise MIB for XLi Snmp Private Enterprise MIB StructureSnmp Addressing Key Additional Products XLi System Group XLi Fault Group XLi System Status Group XLi MainCard Group XLi TrapsFuture Expansion Glossary of SNMP-Related Terms XLi unit PC with HP OpenView installed Configuring and Testing SnmpHP OpenView Configuration Materials Needed Configure Traps Load the TrueTime Enterprise MIBs XLi Configuration Test Procedure Trap Testing 188 XLi Ieee 1588 Clock Introduction Irig Code Format Input IRIG-B Time Quality FlagsOutput Nasa 36 Code Format Irig Standard Format a World Map of Time Zones 194 XLi Ieee 1588 Clock Part Numbers Time Interval Event Time Tiet on Main CPU J1 87-8026 196 XLi Ieee 1588 Clock Sales and Customer Assistance Customer Assistance Center Telephone Numbers 198 XLi Ieee 1588 Clock Glossary of Ieee 1588-related Terms 200 XLi Ieee 1588 Clock Antenna Alarm StatusCable Delay Have Quick Configuration Code Output ConfigurationConfiguration Error F100 Config Configure NTP & Snmp Parameters Guest Login User Name Password Messages Network SettingsKeypad Network Rate Output Signal Strength RequirementsOscillator Serial Port Snmp Private Enterprise MIB Structure Standard 12 VDC Power SupplyFault Snmp.conf Editing XLi UsernameVersion